The movable book is a book with paper[paper?:paper sample maker cutting machine] elements within the pages that may be manipulated by the reader. Many refer to such a book as a moveable book. Movable books include text, illustrations, and folded, glued, or pull-tab elements that move within the pages of the story. The movable book is primarily marketed to children.
The moveable paper elements within the movable book require the expertise of a paper engineer to effectively design these elements. The paper engineer communicates to the printer/publishers how the elements of moveable books are die cut and then assembled. The die cutting[die cutting?:die cutting] of these paper elements is expensive and complex. Even more expensive is the extraordinary amount of hand work the moveable elements require as many must be cut, folded and pasted by hand (some books include 100 elements that require hand manipulation). In fact, movable books are becoming somewhat collectible because of the extraordinary amount of hand assembly that goes into the construction of each movable book.